Martin, Ann M., 1955- Karen's big fight / [book] - New York : Scholastic, 1996. - 101 p. : ill. ; 20 cm. - Baby-sitters little sister . - Baby-sitters little sister ; #79 . - Martin, Ann M., 1955- Baby-sitters little sister ; #79 ; #79. . ISBN: 0590691872 (pbk.) 0590691872 3.99 Subjects--Topical Terms: StepchildrenStepchildren